# Glossary When describing an outline it's common to use the following terms: * *Branch*: A branch consists of an row together with all the rows that it contains. The row's children, the children's children, etc. * *Child*: The children of an row are the rows that it directly contains * *Handle*: The triangle to the left of each row * *Parent*: The parent of a row is the row that directly contains it * *Root*: The topmost row in an outline is the root row. The root isn't visible, instead the top level visible rows in Bike are children of this hidden root row. * *Sibling*: All children that have the same parent row are siblings --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://bikeguide.hogbaysoftware.com/glossary.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.